Features: If you are a beginner violinist or someone who is very thin, you can buy this violin rib to reduce uncomfortable pressure on your shoulder, breast, or collarbone. As a long-time favorite of students and professionals, this violin rib provides a sturdy and comfortable frame, with dense padding for comfort and stability. Designed for 1/8, 1/4, 1/2, 3/4, 4/4 violins, it is also fully adjustable in both height and angle. It fits perfectly with the human shape of the arms, the rest is able to make your musical performance more natural and comfortable! Specifications:Color: BlackMaterial: ABS Material, High Quality Resin, High Quality SpongeWeight:1/8-1/4 Style: 2.4oz/69g1/2 Style: 2.8oz/80g3/4-4/4 Style: 3.5oz/98gFeature: Anti-slip, AdjustablePackage Included:1 x Violin RibNote:1. Please allow 1-3mm error due to manual measurement. Make sure you don't mind before bidding.2. Due to the different light, angle and display taken by the camera, the picture may not reflect the actual color of the subject.3. Thank you for your understanding